Weather in Vieux Fort in September 2017

Expect 30°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Vieux Fort in September. Check more long-term weather averages for Vieux Fort in September before you book your next holiday to St Lucia in 2017.

Guide to Vieux Fort weather in September

The average maximum daytime temperature in Vieux Fort in September is a hot 30°C (86°F) with very high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 7 hours of bright sunshine each day, which represents 61% of the 12 hours of daylight.

Expect 267mm (10.5 inches) of rainfall across the whole of September with 23 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around Vieux Fort in September is 29°C (84°F).